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Finding the Fourth Proportional to 356,292.78, 491,692 and 203,327.92

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Solution

The fourth proportional to 356,292.78, 491,692 and 203,327.92 is: 280,597.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,292.78 : 491,692 = 203,327.92 : x
  2. Step 2: Convert to fraction form
    356,292.78/491,692 = 203,327.92/x
  3. Step 3: Cross multiply
    356,292.78x = 491,692 × 203,327.92
  4. Step 4: Simplify right side
    356,292.78x = 99,974,711,640.64
  5. Step 5: Solve for x
    x = 99,974,711,640.64/356,292.78
  6. Step 6: Final answer
    x = 280,597.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.